My guess is that a TJ/LJ interior is a LOT harder to clean out than a pickup truck bed. There's typically a lot more "stuff" and having to take it all out before you clean it or avoid it (i.e. seats) when pressure washing is a pain in the butt.Well, all I know is that any TJ I've seen that has had bed-liner sprayed down on the inside of it (including Line X, Rhino Liner, etc.) has looked terrible usually in under a year. Maybe there's some sort of new technology out there I'm not aware of, but I still don't see the point of it as far as Jeeps go.
But hey... maybe this is enough to convince @mrblaine to start applying Line-X to the interiors of all the TJs he builds
Sorry... I couldn't resist